Welded pipe-flange.



No. 826,154. PATENTED JULY 1'7, 1905. W. W. DOOLITTLE.

WELDED PIPE FLANGE.

APBLIGATION FILED APR.1.1904.

1 er M7 l jo gg@ #UNITED STATES PATENT ernten.

WILLIAM W. DOOLITTLE, OF CHICACO, ILLINOIS, ASSIGNOR TO CRANE COMPANY,OF CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.

WELDED PIPE-FLANGE.

Specification of Letters Patent.

Patented July 17, l190e.

To a/ZZ whom it may concern:

Be it known that I, WILLIAM W. DooLrT- TLE, a citizen of the UnitedStates, residing at Chicago, in the State of Illinois, have invented acertain new and us`eful Welded Pipe- Flange, of which the following is aspecification. 1

My invention relates to pipes supplied with flanges on the endsthereofto make connecting joints between successive lengths of pipe, andparticularly to pipes having flanges weldedthereon. The objects of theinvention are, to secure a solid joint between the pipe and the flangeby Welding the two together, to prepare the joint so that the innersurface of the pipe is flush clear to the surface l of the .flan e sothat there are no water pockets forme at the joint when the pipes areput-togethenand to generally improve the structure of pipe flanges.These objects, and such other advantages as will hereinafter zappear, Iattain by means of the construction illustrated in preferred form in theaccompanying drawings, wherein-` Figure 1 is a central longitudinalsection of a portion of a large ,iron pipe with its flange weldedthereon according to m method Fi ure 2 is a sketch showing the joiningof two engths together so that the inner surface is perfectly lain, and

Figure 3 is a s etch illustrating a mode of forming the inner surface ofthe pipe in upsetting it into the groove in the flange.

In order to make a better and tighter joint than is ossible by rollingin the'pipe I prefer to wel it in place; and in order to attain astronger connecting structure than is possible between-@pipes andflanges wherein there is no offsetting of themetal of the pipe into theflange, and to give the flange a secure hold on the pipe in addition tothe welding, I

vprovide the iiange 4 with a counter sunk seat `6 around thecircumference, and, after placing the pipe 5 therein, I upset the end soas to thicken it at 7 and fill up the counter sinkv 6, using for thispurpose some forni of forging tool, as will shape the end of the'pipeviiush with the side of the flange and at the same time reserve theinterior ofthe upset portion ush with the general surface of the pipe,

(as for example, by dies, as illustrated in the sketch, Figure 3).

The result is that the pipe not only has. a very secure hold u on theiiange both by the enlargement and f the welding, but when severalsections of pipe are joined together as illustrated in Figure 2 it willbe seen that thc ends of the pipe abut on a perfectly cven line andleave no water pockets at the joints. Other advantages will readilyoccur to those familiar with the art.

Having thus described my invention and illustrated its use, what I claimas new, and desire to secure by Letters Patent, is the following:

l. The combination of a pipe flange hav` ing a countersink in its outerfat a, and a pipe rigidly secured thereto and having an'upset endentirely filling said counter sink and flush with said outer face of theflange and with the interior surface of the pipe.

2. The combination of a flange having a counter sink on the outer faceof the opening therein, and a pipe welded in said flange and having itsend upset to fill said counter sink, and the upset end of the pi lebeing forged so that its inner surface is iius with the generalsurfaceof the ipe and the outer end surface is flush with the side ofthe flange, substantially as described.

In testimony whereof I have hereunder si ned my name in the' presence ofthe two su scribed witnesses.

WILLIAM W. DOOLITTLE. Witnesses: PAUL CARPENTER,

EDWARD C. BURNS.

